Shimano FC-R7100 105 double 12-speed chainset, HollowTech II, black

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Great performance, sensible pricing – 105 is the groupset of choice for cost conscious but performance orientated riders!

Lightweight HollowTech II 105 12-speed chainset
Innovative HollowTech forged and anodised aluminium crank arms utilise a hollow design that minimises flex and keeps the weight low
The chainring teeth have been developed to work in conjunction with Hyperglide&plus 12-speed chains for increased contact to provide greater efficiency and improved power transfer
HollowTech II allows the bottom bracket bearings to be spaced wider apart, enabling the use of larger bearings and an increased axle diameter
Can be used with Shimano external or press-fit bottom brackets
The system allows for easier installation, adjustment, and maintenance
Lightweight anodised aluminium chainrings for smooth and precise shifting

Crank Length	165mm, 170mm, 172.5mm, 175mm
Chainring Size	50/34

Reviews

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Richard Worker

26 April 2024

Excellent turnaround service and communication

Adrian Haylor

24 April 2024

I recently purchased a Shimano groupset from Bike Doctor. I wanted to mix items from two different sets which is normally quite difficult. Michael made an effort to help me out and in the end managed to supply what I was looking for at a very competitive price. I definitely recommend.

Alan Lewis

18 April 2024

Recently I decided to treat myself to a new Di2 groupset. After trawling the web came across the Bike Doctor. VERY competitively priced so I pulled the trigger and ordered. A few days later I decided that a Saturday delivery would be needed and contacted Michael via WhatsApp. He couldn't have been more helpful and Saturday delivery was arranged late on Thursday. He kept me in the loop throughout. I would highly recommend this guy for your cycling needs! I for one have saved the site in my browser favourites!!!

Matt Squires

2 April 2024

I purchased two items for a bike I'm in the process of building. Both items were competitively priced and the customer service from Michael was great - one of the items was temporarily out of stock and he was quick to message and let me know. He then kept me informed regarding the availability and delivery was quick once back in stock. Would definitely recommend and will happily use again!

Lauren Hughes

21 March 2024

Can't recommend enough. Purchased an entire groupset, and had the option for shorter cranks (hard to find everywhere else! ) from these guys. Communication is on point, many thank yous to Michael for helping me with my order over email! Item ordered, dispatched, and recieved within 3 days. Thank you!!

Lee Hutchings

12 March 2024

Magic

stephen green

12 September 2023

First class service from Michael. Superb service from start to finnish. Could not rate highly enough.

Dave Dench

31 August 2023

Great service from start to finish. Michael kept me informed on what needed doing, the cost of that work, and also the progress of the service. Mine was a a little more than a normal service and the first time I have used Bike Doctor. Will def use him again.

Brian Swainston

23 August 2023

Highly recommended and will definitely use again. Mike did a great job of making my road bike (2nd hand but new to me) run like new again, very local to me (5 mins), great price and great communications throughout. And he's a nice chap to boot. Thanks a lot!